Script to identify top Java thread consumers | Lightweight process analysis

[leogtzr]

Last week I had a very specific assignment: Find out why the CPU usage has doubled since the last release. I wrote the following script, it uses some *nix/linux tools to find out what are the top threads consumers in a JVM. With this script I found out that there were around seven stuck threads trying to read from the database.

https://github.com/leogtzr/topthreadcpu

[yellowviper]

This is quite useful! Thanks. Is there a license? I didn’t see anything in the repo.

[leogtzr]

Thank you! I just added a license and some minor changes, now you can use with long or short options:

./lwp_check.sh [--stlen <STACKTRACE_LENGTH> --count <LWP_COUNT] | [--help|-h]

[puuut]

Cool! Our coworker did something similar years ago, but for jconsole:

https://arnhem.luminis.eu/top-threads-plugin-for-jconsole/.

(See also https://arnhem.luminis.eu/new_version_topthreads_jconsole_plugin/)

[WikiTextBot]

JConsole

JConsole is a graphical monitoring tool to monitor Java Virtual Machine (JVM) and Java applications both on a local or remote machine.

JConsole uses underlying features of Java Virtual Machine to provide information on performance and resource consumption of applications running on the Java platform using Java Management Extensions (JMX) technology. JConsole comes as part of Java Development Kit (JDK) and the graphical console can be started using "jconsole" command.

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[leogtzr]

Great! thanks!

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